Vehicle body metal plate bending angle detection device

Abstract

The utility model relates to a vehicle body sheet metal bending angle detection device, and relates to the field, the vehicle body sheet metal bending angle detection device mainly comprises a workbench used for placing a sheet metal part, the surface of the workbench is fixedly provided with a limiting plate used for limiting the position of the side wall of the sheet metal part, and one end of the workbench is fixedly provided with an abutting plate used for limiting the end portion of the sheet metal part; a mounting bracket is fixedly mounted on the workbench, an electric motor is fixedly mounted on the mounting bracket, a rotating shaft is mounted at the driving shaft end of the electric motor through a coupler, a mounting arm is fixedly mounted on the rotating shaft, and a detection module for detecting the bending angle of the metal plate is fixedly mounted on the mounting arm; a display is fixedly mounted on the mounting bracket; and a signal input end of the display is in signal connection with a signal output end of the detection module. According to the invention, the convenience of detecting the bending angle of the sheet metal part by an operator can be improved.

Description

Technical Field

[0001] This application relates to the field of automotive body sheet metal bending angle detection device. Background Technology

[0002] A car body is formed by assembling multiple parts, with common automotive parts mainly formed from sheet metal through processes such as shearing, stamping, and bending. After the sheet metal bending process is completed, the bending angle of the sheet metal parts is often inspected during the actual production process to ensure the assembly accuracy of the car body.

[0003] Existing testing devices are mainly divided into tool measurement and testing, fixture fitting and testing, and equipment testing. In terms of existing technology, traditional testing methods are limited by manual labor and tools, and the convenience of testing the bending angle between the two arms of sheet metal parts is relatively low. Utility Model Content

[0004] To improve the convenience for operators in inspecting the bending angle of sheet metal parts, this application provides a device for detecting the bending angle of body sheet metal.

[0005] The automotive body sheet metal bending angle detection device provided in this application adopts the following technical solution:

[0006] A body sheet metal bending angle detection device mainly includes a worktable for placing sheet metal parts, a limiting plate for limiting the position of the side wall of the sheet metal parts is fixedly installed on the surface of the worktable, and a clamping plate for limiting the end of the sheet metal parts is fixedly installed at one end of the worktable.

[0007] The workbench is fixedly mounted with a mounting bracket, and an electric motor is fixedly mounted on the mounting bracket. The drive shaft of the electric motor is mounted with a rotating shaft via a coupling. An mounting arm is fixedly mounted on the rotating shaft, and a detection module for detecting the bending angle of sheet metal is fixedly mounted on the mounting arm.

[0008] A display is fixedly mounted on the mounting bracket, and the signal input terminal of the display is connected to the signal output terminal of the detection module.

[0009] By adopting the above technical solution, during the process of detecting the bending angle of sheet metal parts, the operator can place the sheet metal parts on the worktable and align and press the ends of the sheet metal parts with the clamping plate. Then, the operator can control the electric motor to drive the detection module to rotate one revolution to detect the angle of the two arms of the sheet metal parts bending and display it on the monitor. This is more efficient and convenient than manually detecting the bending angle of sheet metal parts with the help of tools.

[0010] Preferably, the mounting bracket includes a vertical plate, and the display is fixedly mounted on the vertical plate;

[0011] The vertical plate has a through hole for the rotating shaft to pass through. A sleeve is fixedly installed on the side wall of the abutment plate near the vertical plate. The sleeve has an insertion hole adapted to the rotating shaft. The end of the rotating shaft extends into the insertion hole, and the radial axis of the rotating shaft coincides with the bend line of the sheet metal part.

[0012] By adopting the above technical solution, the end of the rotating shaft extends into the insertion hole, which can restrict the position of the rotating shaft and reduce the occurrence of measurement deviations in the detection module caused by the offset of the rotating shaft and mounting arm.

[0013] Preferably, the detection module includes:

[0014] A distance sensor is detachably mounted on the mounting arm, with its detection end facing the workbench, and is used to detect the distance between itself and the obstructing surface in front and output a sensed distance signal.

[0015] The first microcontroller is connected to the signal output terminal of the ranging sensor, and is used to receive the sensing distance signal and output a first control signal when the first sensing distance is less than a set value, and output a second control signal when the second sensing distance is less than the set value.

[0016] A timer is connected to the signal output terminal of the first microcontroller and is used to receive the first control signal and start timing, receive the second control signal and stop timing and output the interval duration signal.

[0017] The second microcontroller is connected to the signal output terminal of the timer to receive the interval duration signal and output the bending angle signal.

[0018] The signal input terminal of the display is connected to the signal output terminal of the second microcontroller, and the display receives and displays the bending angle signal.

[0019] By adopting the above technical solution, when detecting the bending angle of a sheet metal part, the electric motor drives the distance sensor to rotate at a set angular velocity through the rotating shaft and mounting arm, so that the sensing end of the distance sensor passes through the end of the sheet metal part. When the distance sensor passes through the end faces of the two arms of the sheet metal part, the sensing distance measured by the distance sensor is less than the set value. The first microcontroller outputs the first control signal and the second control signal respectively when the sensing distance is less than the set value for the first and second time. It can automatically control the timer to start or stop the timing. The timer can calculate the interval between the time nodes of the first control signal and the second control signal. Since the angular velocity of the rotating shaft is a constant value and the interval between the first control signal and the second interval is a known value, the second microcontroller can calculate the angle between the two arms of the sheet metal part according to the formula and display it on the display, thereby achieving the technical effect of automatically detecting the bending angle of the sheet metal part.

[0020] Preferably, the ranging sensor includes an ultrasonic ranging sensor, which is mounted on the mounting arm by screws.

[0021] Preferably, an alignment sensing module for sensing the end of the sheet metal part is fixedly installed on the inner wall of the abutment plate;

[0022] The alignment sensing module includes:

[0023] Two thin-film pressure sensors are fixedly installed on the inner side wall of the abutment plate near the worktable to sense the contact pressure between the two arms of the sheet metal part being bent and to output contact pressure signals respectively.

[0024] The third microcontroller is connected to the signal output terminals of the two thin-film pressure sensors and is used to receive the two contact pressure signals and output a third control signal when both contact pressures are greater than a set value.

[0025] An indicator light is fixedly installed on the abutment plate and is used to receive the third control signal and emit light.

[0026] By adopting the above technical solution, when the operator places the sheet metal part on the workbench and makes the end of the sheet metal part abut against the clamping plate, the pressure values ​​measured by the two diaphragm pressure sensors are both greater than the set value. After the third microcontroller compares the values, it can control the indicator light to illuminate, indicating to the operator that the end of the sheet metal part has been aligned with the clamping plate. This makes it easier for the operator to more accurately detect the bending angle of the sheet metal part.

[0027] In summary, the body sheet metal bending angle detection device of this application has at least the following beneficial technical effects:

[0028] 1. When detecting the bending angle of a sheet metal part, an electric motor drives a distance sensor to rotate at a set angular velocity via a rotating shaft and mounting arm. This causes the sensing end of the distance sensor to pass over the end of the sheet metal part. When the distance sensor passes the end faces of both arms of the sheet metal part, the sensing distance measured by the distance sensor is less than the set value. The first microcontroller outputs a first control signal and a second control signal respectively when the sensing distance is less than the set value for the first and second times. This can automatically control the timer to start or stop timing. The timer can calculate the interval between the occurrence of the first and second control signals. Since the angular velocity of the rotating shaft is a constant value and the interval between the first control signal and the second interval is a known value, the second microcontroller can calculate the angle between the two arms of the sheet metal part according to the formula and display it on the display, thus achieving the technical effect of automatically detecting the bending angle of the sheet metal part.

[0029] 2. When the operator places the sheet metal part on the workbench and makes the end of the sheet metal part abut against the clamping plate, the pressure values ​​measured by the two diaphragm pressure sensors are both greater than the set value. After the third microcontroller compares the values, it can control the indicator light to illuminate, indicating to the operator that the end of the sheet metal part has been aligned with the clamping plate. This allows the operator to more accurately detect the bending angle of the sheet metal part. Attached Figure Description

[0030] Figure 1 This is a schematic diagram illustrating the overall structure of the detection device in an embodiment of this application.

[0031] Figure 2 This is a schematic diagram illustrating the placement of sheet metal parts on a workbench, as shown in the embodiments of this application.

[0032] Figure 3 yes Figure 2 The enlarged schematic diagram at point A in the middle is mainly used to show the overall structure of the detection module.

[0033] Explanation of reference numerals in the attached drawings: 1. Workbench; 11. Limiting plate; 2. Sheet metal part; 3. Clamping plate; 31. Sleeve; 32. Thin-film pressure sensor; 33. Indicator light; 4. Mounting bracket; 41. Vertical plate; 5. Electric motor; 51. Rotating shaft; 52. Mounting arm; 6. Ultrasonic ranging sensor; 7. Display. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0035] Example 1

[0036] This application discloses a device for detecting the bending angle of automotive body sheet metal. (Refer to...) Figure 1 It mainly includes a workbench 1 for placing sheet metal parts 2, a limiting plate 11 for limiting the position of the side wall of sheet metal parts 2 is fixedly installed on the surface of the workbench 1, and a clamping plate 3 for limiting the end of sheet metal parts 2 is fixedly installed at one end of the workbench 1; a mounting bracket 4 is fixedly installed on the workbench 1, an electric motor 5 is fixedly installed on the mounting bracket 4, a rotating shaft 51 is installed on the drive shaft end of the electric motor 5 through a coupling, a mounting arm 52 is fixedly installed on the rotating shaft 51, and a detection module for detecting the bending angle of sheet metal is fixedly installed on the mounting arm 52; a display 7 is fixedly installed on the mounting bracket 4, and the signal input terminal of the display 7 is connected to the signal output terminal of the detection module.

[0037] During the inspection of the bending angle of sheet metal part 2, the operator can place sheet metal part 2 on the workbench 1 and align and press the end of sheet metal part 2 with the clamping plate 3. Then, the operator can control the electric motor 5 to drive the detection module to rotate one revolution to detect the angle of the two arms of the bending of sheet metal part 2 and display it on the display 7. This is more efficient and convenient than manually detecting the bending angle of sheet metal part 2 with the help of tools.

[0038] The workbench 1 has legs fixedly installed at its bottom, and two support plates are fixedly installed on the two legs near the clamping plate 3. The mounting bracket 4 is welded to the support plate. In addition, an L-shaped steel is pre-fixed to one end of the workbench 1 with screws. The L-shaped steel extends out of the end of the workbench 1, and the two inner wall surfaces of the L-shaped steel are flush with the top surface of the workbench 1 and the inner wall surface of the limiting plate 11, respectively. The clamping plate 3 is fixed to the end of the L-shaped steel by welding, which can further improve the accuracy of angle detection of the bending angle of the sheet metal part 2.

[0039] Referring to the figure, the mounting bracket 4 includes a vertical plate 41, and the display 7 is fixedly mounted on the vertical plate 41. A through hole is provided on the vertical plate 41 for the rotating shaft 51 to pass through. A sleeve 31 is fixedly installed on the side wall of the abutment plate 3 near the vertical plate 41. An insertion hole adapted to the rotating shaft 51 is provided in the sleeve 31. The end of the rotating shaft 51 extends into the insertion hole, and the radial axis of the rotating shaft 51 coincides with the bend line of the sheet metal part 2.

[0040] The end of the rotating shaft 51 extends into the insertion hole, which can restrict the position of the rotating shaft 51 and reduce the occurrence of measurement deviations in the detection module caused by the offset of the rotating shaft 51 and the mounting arm 52.

[0041] Reference Figures 1-3 The detection module includes: a distance sensor, detachably mounted on the mounting arm 52, with its detection end facing the workbench 1, used to detect the distance between itself and the obstructing surface in front and output a sensed distance signal; a first microcontroller, connected to the signal output terminal of the distance sensor, used to receive the sensed distance signal and output a first control signal when the first sensed distance is less than a set value, and output a second control signal when the second sensed distance is less than the set value; a timer, connected to the signal output terminal of the first microcontroller, used to receive the first control signal and start timing, receive the second control signal and stop timing and output an interval duration signal; a second microcontroller, connected to the signal output terminal of the timer, used to receive the interval duration signal and output a bending angle signal; and a display 7, whose signal input terminal is connected to the signal output terminal of the second microcontroller, and whose display 7 receives and displays the bending angle signal.

[0042] When detecting the bending angle of sheet metal part 2, electric motor 5 drives distance sensor to rotate at a set angular velocity through rotating shaft 51 and mounting arm 52, so that the sensing end of distance sensor passes through the end of sheet metal part 2. When distance sensor passes through the end face of the two arms of sheet metal part 2, the sensing distance measured by distance sensor is less than the set value. The first microcontroller outputs the first control signal and the second control signal respectively when the sensing distance is less than the set value for the first and second time. It can automatically control the timer to start or stop the timing. The timer can calculate the interval between the time nodes of the first control signal and the second control signal. Since the angular velocity of rotating shaft 51 is a constant value and the interval between the first control signal and the second interval is a known value, the second microcontroller can calculate the angle between the two arms of sheet metal part 2 according to the formula and display it through display 7, so as to realize the technical effect of automatically detecting the bending angle of sheet metal part 2.

[0043] In this embodiment, the ranging sensor used is an ultrasonic ranging sensor 6, which is mounted on the mounting arm 52 with screws. It should be noted that in this embodiment, the distance between the ultrasonic ranging sensor 6 and the radial axis of the rotating shaft 51 is less than the length of the shorter arm of the sheet metal part 2, but greater than the longest distance between the clamping plate 3 and the corner (the distance between the diagonal sides).

[0044] The implementation principle of the body sheet metal bending angle detection device in this application embodiment is as follows: When detecting the bending angle of the sheet metal part 2, the electric motor 5 drives the distance measuring sensor to rotate at a set angular velocity through the rotating shaft 51 and the mounting arm 52, so that the sensing end of the distance measuring sensor passes through the end of the sheet metal part 2. When the distance measuring sensor passes through the end face of the two arms of the sheet metal part 2, the sensing distance measured by the distance measuring sensor is less than the set value. The first microcontroller outputs the first control signal and the second control signal respectively when the sensing distance is less than the set value for the first and second times. It can automatically control the timer to start or stop the timing. The timer can calculate the interval between the time nodes of the first control signal and the second control signal. Since the angular velocity of the rotating shaft 51 is a constant value and the interval between the first control signal and the second interval is a known value, the second microcontroller can calculate the angle between the two arms of the sheet metal part 2 according to the formula and display it through the display 7, so as to achieve the technical effect of automatically detecting the bending angle of the sheet metal part 2.

[0045] Example 2

[0046] In this embodiment, refer to Figure 2An alignment sensing module for sensing the ends of the sheet metal part 2 is fixedly installed on the inner wall of the clamping plate 3. The alignment sensing module includes: two thin-film pressure sensors 32, which are fixedly installed on the inner side wall of the clamping plate 3 near the workbench 1, for sensing the contact pressure between the two arms of the sheet metal part 2 and outputting contact pressure signals respectively; a third microcontroller, which is connected to the signal output terminals of the two thin-film pressure sensors 32, for receiving the two contact pressure signals and outputting a third control signal when both contact pressures are greater than the set value; and an indicator light 33, which is fixedly installed on the clamping plate 3, for receiving the third control signal and emitting light.

[0047] When the operator places the sheet metal part 2 on the workbench 1 and makes the end of the sheet metal part 2 abut against the clamping plate 3, the pressure values ​​measured by the two diaphragm pressure sensors 32 are both greater than the set value. After the third microcontroller compares the values, it can control the indicator light 33 to light up, indicating to the operator that the end of the sheet metal part 2 has been aligned with the clamping plate 3, which makes it easier for the operator to detect the bending angle of the sheet metal part 2 more accurately.

[0048] It should be noted that, please refer to Figure 3 In this embodiment, the standard angle of the bending angle between the two arms of the sheet metal part 2 to be detected is 90 degrees. Both thin-film pressure sensors 32 are pre-installed in the preset area at the ends of the two arms. In some other embodiments, the installation position of the two thin-film pressure sensors 32 can be adjusted according to the standard angle of the bending angle between the two arms of the sheet metal part 2. This is not limited or described in detail here.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for detecting the bending angle of a car body sheet metal frame, characterized in that, The workbench (1) for placing sheet metal parts (2) is provided with a limiting plate (11) fixedly installed on the surface of the workbench (1) for limiting the position of the side wall of the sheet metal parts (2), and a clamping plate (3) fixedly installed at one end of the workbench (1) for limiting the end of the sheet metal parts (2). The workbench (1) is fixedly mounted with a mounting bracket (4), and an electric motor (5) is fixedly mounted on the mounting bracket (4). The drive shaft end of the electric motor (5) is mounted with a rotating shaft (51) through a coupling. An mounting arm (52) is fixedly mounted on the rotating shaft (51), and a detection module for detecting sheet metal bending angles is fixedly mounted on the mounting arm (52). A display (7) is fixedly mounted on the mounting bracket (4), and the signal input terminal of the display (7) is connected to the signal output terminal of the detection module.

2. The body sheet metal bending angle detection device according to claim 1, characterized in that, The mounting bracket (4) includes a vertical plate (41), and the display (7) is fixedly mounted on the vertical plate (41); The vertical plate (41) has a through hole for the rotating shaft (51) to pass through. A sleeve (31) is fixedly installed on the side wall of the abutting plate (3) near the vertical plate (41). The sleeve (31) has an insertion hole that matches the rotating shaft (51). The end of the rotating shaft (51) extends into the insertion hole, and the radial axis of the rotating shaft (51) coincides with the bend line of the sheet metal part (2).

3. The body sheet metal bending angle detection device according to claim 2, characterized in that, The detection module includes: The distance sensor is detachably mounted on the mounting arm (52), with the detection end facing the worktable (1), and is used to detect the distance between itself and the obstructing surface in front and output a sensing distance signal; The first microcontroller is connected to the signal output terminal of the ranging sensor, and is used to receive the sensing distance signal and output a first control signal when the first sensing distance is less than a set value, and output a second control signal when the second sensing distance is less than the set value. A timer is connected to the signal output terminal of the first microcontroller and is used to receive the first control signal and start timing, receive the second control signal and stop timing and output the interval duration signal. The second microcontroller is connected to the signal output terminal of the timer to receive the interval duration signal and output the bending angle signal. The signal input terminal of the display (7) is connected to the signal output terminal of the second microcontroller, and the display (7) receives and displays the bending angle signal.

4. The body sheet metal bending angle detection device according to claim 3, characterized in that, The ranging sensor includes an ultrasonic ranging sensor (6), which is mounted on the mounting arm (52) by screws.

5. The body sheet metal bending angle detection device according to claim 3, characterized in that, An alignment sensing module for sensing the end of the sheet metal part (2) is fixedly installed on the inner wall of the abutment plate (3); The alignment sensing module includes: Two thin-film pressure sensors (32) are fixedly installed on the inner side wall of the abutment plate (3) near the worktable (1) to sense the contact pressure between the two arms of the sheet metal part (2) and output contact pressure signals respectively. The third microcontroller is connected to the signal output terminals of the two thin-film pressure sensors (32) to receive the two contact pressure signals and output a third control signal when both contact pressures are greater than a set value. The indicator light (33) is fixedly installed on the abutment plate (3) and is used to receive the third control signal and emit light.

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